Blind-lock.



No. 765,539. PATENTED JULY 19,1904. R..H. ASHMORE.

BLIND LOCK.

APPLICATION FILED FEB. s, 1904.

N0 MODEL.

WITNESSES: IN VENTOB %m. Q. 305625 .EflSZiZIOT'G. My fl/IWW I BYM ATTOHNE rs No.1 765,553. 4 PAT-EDITED JULY 19, 1904 F. M. BULKLEY. GLIP FOR HOLDING PAPERS, CLOTHING, m.

uruoumn rum) A2316. 1904,

N0 IODEL.

WITNESSES.

INVENTOR.

Patented July 19, 1904.

PATENT OFFICE.

ROBERT HENDERSON ASHMORE, OF JEFFERSON CITY, TENNESSEE.

BLIND-LOCK.

SPECIFICATION forming part of Letters Patent No. 765,539, dated July 19, 1904,

Application filed February 6, 1904. Serial No. 192,359. (N model.)

To all whom it may concern/.

Be it known that I, ROBERT HENDERSON,

AsHMoRn, a citizen of the United States, and

trating my invention in use, and Fig. 2 is a horizontal sectional view taken on line 2 2 of Fig. 1.

In the preferred form of my invention I employ suitable bars or members A B, connected together by a rule-joint O. The bar or member B is secured to the inner side of the right-hand blind D and located thereon so that when the bar or member A is adjusted to upright position (indicated by dotted line in Fig. 1) it will be removed from engagement with the left-hand blind E, and thus permit both blinds to be swung or moved to open position. On the blind E a keeper F is arranged and adapted for engagement with the free end of the bar or member A, the engagement being effected through means of an undercut shoulder or beveled edge G on the keeper and the front or upper bevel H on the free end of the bar or member A.

For holding the member A in engagement with the keeper F, I provide it with a thumbscrew 1, having screw-thread adjustment in said member A and whereby its extended end J may be adjusted into or out of engagement with a suitable recess K in the blind E. If desired, a simple pin may be used in place of the thumb-screw I.

The construction of my improved blindlock will be understood from the above description. In its use it is apparent that when it is desired to secure the blinds at closed position the same may be effected simply by turning the member A down to horizontal position with its bevelment H into engagement with the shoulder G on the keeper F. By simple turning action on the screw I its end J may be adjusted into the recess K in the blind E, and when such adjustment is effected obviously the member A will beheld against either upward or downward movement. Now it is apparent that the member A should be sufficiently long to properly overlap the blind E and render much cutting away thereof necessary before the securing means can be unfastened from the outside of the blinds.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The hereinbefore-described lock consisting of a bar having means at one end adapting it to be pivoted to a suitable support, a shoulder on the support limiting pivotal movement of the bar and whereby the latter may be supported at unlocking position, a fixedlylocated keeper wherewith the free end of the bar is adapted for holding engagement against lateral strain, and means for securing the bar against unlocking movement substantially as described.

2. The hereinbefore-described lock consisting of two members having pivoted connection, one thereof adapted to be secured to a suitable support and the other to turn on the connecting-pivot, the connection being in the form of a rule-joint employing a supportingshoulder on one member, whereby the other member may be held at unlockingposition, a fixedly-located keeper having an undercut shoulder, wherewith the free member is adapted to engage, and a securing device on the free member whereby it may be held against unlocking action substantially as described.

ROBERT HENDERSON ASHMORE.

Witnesses:

J. H. BUNDREN, J. T. WATKINS. 

